Back support device



FIG. 1 is a perspective view of a back support device showing our newdesign;

FIG. 2 is a top view of the back support device;

FIG. 3 is a side view of the back support device;

FIG. 4 is a bottom view of the back support device;

FIG. 5 is a front view of the back support device; and,

FIG. 6 is a rear view of the back support device.

The ornamental design for a back support device, as shown and described.